568-236 BUNA 70 SQUARE CUT RINGS

Ordered as SH70236, this is an AS568-236 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring with an inside diameter of 3.234 in (82.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.512 in (89.2 mm). The square-cut ring provides an economical lathe-cut alternative where a moulded o-ring is not required.

The material holds up against petroleum-based oils, hydraulic fluids, and water. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid. The profile itself contributes a flat contact band that spreads sealing load across a wider area and simple lathe-cut manufacture at low tooling cost. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Typical settings include hydraulic and pneumatic systems, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number SH70236. Unit weight is approximately 3.8782 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.